Method for planting cadmium-reduction and selenium-increase rice, selenium-enriched rice and selenium-enriched bran

Abstract

The invention provides a method for planting cadmium-reduction and selenium-increase rice. The method comprises the following steps of (1) obtaining the content of total cadmium in soil, and judging whether the content of cadmium in rice produced by the preceding crop of rice which is planted in the soil exceeds the standard or not; (2) by utilizing the results obtained in step (1), judgment results, and setting value of zinc and cadmium ratio, planting according to a cadmium-reduction standard control procedure table, wherein the planting operation comprises the steps of (21) applying 0.25-1kg of zinc fertilizer per mu as a base fertilizer, and applying selenium fertilizer into cavities; (22) spraying composite selenium fertilizer to the leaves in the setting growth period of rice. The planting method has the advantages that on the basis of comprehensively considering the content of total cadmium in the soil and judging whether the content of cadmium in the rice exceeds the standard or not, the cadmium-reduction and selenium-increase operation is performed, so the content of cadmium in the rice can meet the standard; the content of the selenium in the rice is improved, and the cadmium-reduction and selenium-increase purposes are realized. The invention also provides selenium-enriched rice and selenium-enriched rice bran, wherein the selenium-enriched rice and the selenium-enriched rice bran are processed by the rice which is obtained by the rice planting method.

Description

technical field [0001] The present invention relates to the technical field of rice planting, more specifically, relates to a rice planting method for reducing cadmium and increasing selenium, and the present invention also relates to selenium-enriched rice and selenium-enriched rice bran obtained by processing the rice produced by the above-mentioned rice planting method . Background technique [0002] Rice is the main food crop in my country, and the population that takes rice as a staple food accounts for about 50% of the total population. Compared with other grains, rice contains the least crude fiber, and the starch grains are small and easy to digest. The nutritional value of rice is high, and the digestibility and absorption rate of various nutrients contained in it are high, which is suitable for human needs. [0003] The planting area of ​​rice in my country is as high as 29.96 million hectares, distributed in a vast area, from Sanya City in tropical Hainan Provin...

AI Technical Summary

Problems solved by technology

However, the selenium content in the current selenium-enriched rice is stil

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